CN109563936B - Hot water recirculation valve using a straight water supply pipe - Google Patents
Hot water recirculation valve using a straight water supply pipe Download PDFInfo
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- CN109563936B CN109563936B CN201780045335.7A CN201780045335A CN109563936B CN 109563936 B CN109563936 B CN 109563936B CN 201780045335 A CN201780045335 A CN 201780045335A CN 109563936 B CN109563936 B CN 109563936B
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- supply pipe
- receiving plate
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 301
- 239000012530 fluid Substances 0.000 claims description 4
- 239000008400 supply water Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 10
- 230000003134 recirculating effect Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1223—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being acted upon by the circulating fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1226—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston the fluid circulating through the piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Multiple-Way Valves (AREA)
- Domestic Plumbing Installations (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The present invention relates to a hot water recirculation valve using a straight water supply pipe, which is a hot water recirculation valve provided between a hot water supply pipe (13) and a straight water supply pipe (14) provided in an existing house for recirculation of hot water, and comprises a housing (110) and a pressure receiving plate (140), wherein the housing (110) comprises: hot water flow paths (111, 112) connected to the hot water supply pipe (13); a direct water supply flow path (114, 115, 116) connected to the direct water supply pipe (14); and a recirculation flow path (113) connected between the hot water flow paths (111, 112) and the straight water supply flow paths (114, 115, 116), wherein the pressure receiving plate (140) is provided in the straight water supply flow paths (114, 115, 116), and the pressure receiving plate (140) generates a differential pressure so that the recirculation flow path (113) is opened by the pressure of the recirculated hot water when the hot water is recirculated, and the recirculation flow path (113) is closed by the pressure of the straight water when the straight water is used.
Description
Technical Field
The present invention relates to a hot water recirculation valve applied to a system for recirculating hot water by a direct water supply pipe without providing a hot water recirculation pipe, and more particularly, to a hot water recirculation valve using a direct water supply pipe, which is simplified in a configuration of a hot water recirculation valve provided between a hot water supply pipe and a direct water supply pipe for recirculating hot water.
Background
Generally, in order to use hot water, only cold water from a boiler or a water heater to a hydrant and water which is not heated to a sufficient temperature are discarded to use the hot water.
A Recirculation system (Recirculation system) developed to save the water discarded as described above includes a telescopic system requiring a separate Recirculation pipe in addition to a straight water supply pipe and a hot water pipe, and a hot water Recirculation system using a straight water supply pipe for recirculating and preheating hot water by a Recirculation valve and a Recirculation pump between a hot water pipe and a straight water supply pipe which have been conventionally provided.
In the existing hot water recirculation system using a direct water supply pipe, a valve operated by electricity is used, or a valve operated by Thermal wax (Thermal wax) or Bimetal (bimetallic) as a Thermal power material is used.
As an example of a conventional hot water recirculation system using a straight water supply pipe, international patent publication No. WO 2016/040849 discloses a configuration of a recirculation valve that bypasses hot water without using electricity. The recirculation valve disclosed in the international patent publication includes: a bimetal valve which is opened if the temperature is below a predetermined temperature and is closed if the temperature is above the predetermined temperature; and a Check valve (Check valve) that imparts directionality such that the direct supply water cannot flow to the hot water side. The structure is complicated, so that the number of manufacturing processes is excessive and the material cost is high. Further, since the hot water is configured to be recirculated through a narrow slit of the bimetal valve which is opened under the condition of the predetermined temperature or lower, there is a problem that the circulating flow rate is small and the warm-up time of the hot water is long.
In addition, the conventional hot water recirculation system using the straight water supply pipe is configured such that the recirculation valve is opened under a condition of a predetermined temperature or lower, and the recirculation pump is also operated under a condition of a predetermined temperature or lower. However, the space where the recirculation valve is disposed is physically separated from the space where the recirculation pump is disposed, and thus the temperature sensed at the recirculation valve and the temperature sensed at the recirculation pump may not coincide. In the case where the temperatures are not consistent as described above, feedback cannot be smoothly performed between the recirculation valve and the recirculation pump, and thus, in the case where the temperature sensed by the recirculation valve has reached the set preheating temperature, if the temperature sensed by the recirculation pump is lower than the set preheating temperature, the recirculation valve may continue to operate, and in this case, since the recirculation valve operates, there is a problem in that it is difficult to match the set preheating temperature and unnecessary power is consumed.
In addition, in the conventional hot water recirculation system using the direct water supply pipe, since a general check valve is used, when the direct water is used in the recirculation process, the recirculated hot water is mixed with the direct water and supplied to the user, and thus there is an inconvenience in that the user cannot use the desired cool direct water.
Disclosure of Invention
Technical problem
The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a hot water recirculation valve using a straight water supply pipe, comprising: the configuration of a hot water recirculation valve applied to a hot water recirculation system using a straight water supply pipe can be simplified, the flow rate of hot water recirculation can be increased, and the mixing of hot water with straight water supply and the discharge of hot water can be rapidly blocked when the straight water supply is used during the hot water recirculation.
Technical scheme
The hot water recirculation valve 100 using a straight water supply pipe according to the present invention for achieving the above-described object is a hot water recirculation valve provided between a hot water supply pipe 13 and a straight water supply pipe 14 provided in an existing house for recirculation of hot water, and includes a housing 110 and a pressure receiving plate 140, wherein the housing 110 includes: hot water flow paths 111 and 112 connected to the hot water supply pipe 13; direct water supply paths 114, 115, and 116 connected to the direct water supply pipe 14; and a recirculation flow path 113 connected between the hot water flow paths 111 and 112 and the straight water supply flow paths 114, 115 and 116, wherein the pressure receiving plate 140 is provided in the straight water supply flow paths 114, 115 and 116, and the pressure receiving plate 140 generates a differential pressure so that the recirculation flow path 113 is opened by the pressure of the recirculated hot water when the hot water is recirculated and the recirculation flow path 113 is closed by the pressure of the straight water when the straight water is used.
The hot water recirculation valve using the straight water supply pipe may further include: a valve body 120 that reciprocates integrally with the pressure receiving plate 140 to open and close one end of the recirculation flow path 113; and an elastic member 170 elastically supporting the pressure receiving plate 140 such that the valve body 120 is closely attached to one end of the recirculation flow path 113.
Separate spaces G1, G2 may be provided between the outer surfaces of the valve body 120 and the pressure receiving plate 140 and the inner surface of the housing 110 forming the straight water supply passages 114, 115, 116 so that fluid can flow.
A flow space G3 may be formed in the pressure receiving plate 140 so that the straight water or the hot water can flow in the front-rear direction of the pressure receiving plate 140, and a diaphragm 180 may be connected between the outer end of the pressure receiving plate 140 and the inner surface of the case 110.
The valve body 120 and the pressure receiving plate 140 may be connected by a shaft 130 having a diameter smaller than the diameters of the valve body 120 and the pressure receiving plate 140, and a connection flow path 115 may be formed in a space between the valve body 120 and the pressure receiving plate 140 outside the shaft 130.
When the hot water is recirculated, the pressure P3 inside the recirculation flow path 113 may be formed to be greater than the pressure P2 inside the connection flow path 115, so that the recirculation flow path 113 is opened.
When hot water or direct water is used, the pressure P1 of the direct water acting on the rear end surface of the pressure receiving plate 140 may be formed to be greater than the pressure P2 inside the connection flow path 115, so that the recirculation flow path 113 is closed.
One end of the elastic member 170 may be supported by a moving body 150 extending rearward from the pressure receiving plate 140, and the other end of the elastic member 170 may be supported by a fixing body 160 separated from the moving body 150 and coupled to the inside of the housing 110.
The pressure receiving plate 140 may have a flange shape protruding outward of the moving body 150.
An opening 118 may be formed at one side of the housing 110 so that the valve body 120, the shaft 130, the pressure receiving plate 140, the moving body 150, the fixing body 160, and the elastic member 170 can be inserted into the inside of the housing 110.
Advantageous effects
According to the hot water recirculation valve using the straight water supply pipe of the present invention, the pressure receiving plate is provided in the straight water supply path, so that the differential pressure is generated as follows, and therefore, the structure of the hot water recirculation valve can be simplified, the number of manufacturing processes can be reduced, and the material cost can be saved: when the hot water is recirculated, the recirculation flow path is opened by the pressure of the hot water, and when the straight water supply is used, the recirculation flow path is closed by the pressure of the straight water supply
Further, when the hot water is recirculated, the valve body is spaced apart from one side end of the recirculation flow path with a sufficient distance, so that the flow rate of the recirculated hot water can be increased as compared with the hot water recirculation valve according to the related art, thereby shortening the warm-up time of the hot water.
Further, even when the straight water supply is used during the recirculation of the hot water, the valve body quickly closes the recirculation flow path by the differential pressure acting between the front and rear sides of the pressure receiving plate, so that it is possible to prevent the hot water from being mixed with the straight water supply and supplied to the user.
Further, in the conventional art, even when the temperature of the hot water recirculation valve does not coincide with the temperature of the recirculation pump, the recirculation pump is operated, and it is difficult to accurately match the set preheating temperature and the problem of power consumption is involved, but according to the present invention, the recirculation flow path is opened only when the recirculation pump is operated, and recirculation of hot water is performed, and when the operation of the recirculation pump is interrupted, the recirculation flow path is closed and recirculation of hot water is interrupted, so that it is possible to preheat water to match the set preheating temperature and to solve the problem of unnecessary power consumption.
Drawings
Fig. 1 is a configuration diagram of a hot water recirculation system to which a hot water recirculation valve using a straight water supply pipe according to the present invention is applied.
Fig. 2 is an operation state diagram illustrating a case where a hot water recirculation valve using a straight water supply pipe according to a first embodiment of the present invention is opened.
Fig. 3 is an operation state diagram illustrating a case where a hot water recirculation valve using a straight water supply pipe is closed according to the first embodiment of the present invention.
Fig. 4 is an operation state diagram illustrating a case where a hot water recirculation valve using a straight water supply pipe according to a second embodiment of the present invention is opened.
Fig. 5 is an operation state diagram illustrating a case where a hot water recirculation valve using a straight water supply pipe according to a second embodiment of the present invention is closed.
Description of the symbols
10: direct water supply pipe 11: direct water supply inflow pipe
12: hot water discharge pipe 13: hot water supply pipe
14: direct water supply pipe 20: hot water tank
30: the recirculation pump 40: water hydrant
100: hot water recirculation valve 110: shell body
111: hot water inflow passage 112: hot water outflow path
113: recirculation flow path 114: direct water inflow path
115: connection flow path 116: direct water supply outflow path
117: valve seat 118: opening part
120: valve body 130: shaft
140: the pressure receiving plate 150: movable main body
160: the fixing body 161: o-shaped ring
170: elastic member 180: diaphragm
Detailed Description
Hereinafter, the configuration and operation of the preferred embodiment of the present invention will be described in detail with reference to the drawings.
Fig. 1 is a configuration diagram of a hot water recirculation system to which a hot water recirculation valve using a straight water supply pipe according to the present invention is applied.
The hot water recirculation system to which the present invention is applied includes: a direct water inflow pipe 11 branched from the direct water supply pipe 10; a hot water tank 20 for heating the direct water flowing in through the direct water inflow pipe 11 to generate hot water; a hot water discharge pipe 12 for discharging the hot water heated in the hot water tank 20; a recirculation pump 30 for pumping and recirculating the hot water passing through the hot water discharge pipe 12; a hot water supply pipe 13 connected to an outlet of the recirculation pump 30 and supplying hot water to a hot water discharge port (not shown) side of the hydrant 40; a direct water supply pipe 14 connected to the direct water supply pipe 10 and supplying direct water to a direct water discharge port (not shown) side of the hydrant 40; a hot water recirculation valve 100 is provided between the hot water supply pipe 13 and the straight water supply pipe 14 for recirculation of hot water.
The hot water recirculation valve 100 is configured to be additionally provided between a hot water supply pipe 13 and a straight water supply pipe 14, which are already provided in an existing house, for recirculation of hot water, and has the following functions: when hot water or direct water is used, the flow of fluid between the hot water supply pipe 13 and the direct water supply pipe 14 is blocked, and only the flow in a single direction from the hot water supply pipe 13 toward the direct water supply pipe 14 is allowed without using the hot water or the direct water, so that the direct water can be preheated to a set temperature, thereby realizing the recirculation of the hot water.
Hereinafter, the configuration and operation of the hot water recirculation valve 100 according to the first embodiment of the present invention will be described.
Fig. 2 is an operational state diagram illustrating a case where a hot water recirculation valve using a straight water supply pipe according to a first embodiment of the present invention is opened, and fig. 3 is an operational state diagram illustrating a case where the hot water recirculation valve using a straight water supply pipe according to the first embodiment of the present invention is closed. Arrows shown in fig. 2 and 3 indicate the flow direction of the hot water and the straight water.
The hot water recirculation valve 100 according to the present invention includes a housing 110 connected between the hot water supply pipe 13 and the straight water supply pipe 14, and a member provided inside the housing 110 to control whether hot water is recirculated or not by using a differential pressure.
Inside the housing 110, there are formed: hot water flow paths 111 and 112 connected to the hot water supply pipe 13; direct water supply paths 114, 115, and 116 connected to the direct water supply pipe 14; and a recirculation flow path 113 connected between the hot water flow paths 111 and 112 and the straight water supply flow paths 114, 115 and 116 to provide a flow path for recirculating hot water.
The hot water flow paths 111 and 112 include: a hot water inflow passage 111 connected to the hot water supply pipe 13 to allow hot water to flow therein; and a hot water outflow passage 112 for supplying the hot water flowing in through the hot water inflow passage 111 to a hot water discharge port (not shown) side of the hydrant 40.
The recirculation flow path 113 branches off from the hot water flow paths 111 and 112 to communicate with the straight water supply flow paths 114, 115, and 116, and provides a flow path for allowing the hot water passing through the hot water flow paths 111 and 112 to flow to the straight water supply flow paths 114, 115, and 116 when the hot water is recirculated.
The direct water supply flow paths 114, 115, and 116 include: a direct water inflow passage 114 connected to the direct water supply pipe 14 to allow the direct water to flow therein; a connection flow path 115 communicating with the direct supply water inflow flow path 114; and a straight feed water outflow passage 116 for supplying the straight feed water passing through the connection passage 115 to a straight feed water discharge port (not shown) side of the hydrant 40.
The direct water flow paths 114, 115, and 116 include: a valve body 120 that is in close contact with a valve seat 117 formed at one end of the recirculation flow path 113 or is spaced apart from the valve seat 117 to open and close the recirculation flow path 113; a shaft 130 extending rearward from a rear end surface of the valve body 120; a pressure receiving plate 140 integrally formed at a rear end of the shaft 130; a moving body 150 extending rearward from the pressure receiving plate 140; an elastic member 170 having one end supported by the pressure receiving plate 140 and the moving body 150; and a fixing body 160 which is separated from the moving body 150, is coupled to the inside of the case 110, and supports the other end of the elastic member 170.
Spaces G1 and G2 are provided between the outer surfaces of the valve element 120 and the pressure receiving plate 140 and the inner surface of the housing 110 forming the connection flow path 115, so that fluid can flow. The valve body 120 and the pressure receiving plate 140 are connected by a shaft 130 having a diameter smaller than the diameters of the valve body 120 and the pressure receiving plate 140, and a connection flow path 115 is formed in a space between the valve body 120 and the pressure receiving plate 140 outside the shaft 130.
The pressure receiving plate 140 has a flange shape protruding outward of the moving body 150, and when the straight feed water is used, the pressure of the straight feed water flowing in through the straight feed water inflow passage 114 pressurizes the pressure receiving plate 140 in the direction in which the straight feed water flows, and at the same time, applies pressure to the valve body 120 connected to the pressure receiving plate 140 through the shaft 130, so that the valve body is brought into close contact with the valve seat 117.
The elastic member 170 elastically supports the pressure receiving plate 140, and applies elastic force to the valve body 120 connected to the pressure receiving plate 140 via the shaft 130 to be in close contact with the valve seat 117.
An opening 118 is formed at one side of the housing 110 so that the valve element 120, the shaft 130, the pressure receiving plate 140, the moving body 150, the fixing body 160, and the elastic member 170 can be inserted into the housing 110. An O-ring 161 for maintaining airtightness is coupled between the outer peripheral surface of the fixing body 160 and the inner surface of the housing 110. Therefore, the assembly of the hot water recirculation valve 100 can be completed only by the operation of pushing the valve body 120, the shaft 130, the pressure receiving plate 140, the moving body 150, the fixing body 160, and the elastic member 170 into the case 110 through the opening 118, and thus the manufacturing process of the hot water recirculation valve 100 can be simplified.
Referring to fig. 2, when the hot water is recirculated, the recirculation pump 30 is operated, and the pressure P3 inside the recirculation flow path 113 is formed to be greater than the pressure P2 inside the connection flow path 115, so that the valve body 120 is pushed toward the flow direction of the hot water, thereby being in a state where the recirculation flow path 113 is opened.
In this case, since the valve body 120 is spaced rearward apart from the valve seat 117 formed at one end of the recirculation flow path 113 with a sufficient distance therebetween, and the hot water is recirculated through the spaces G1 and G2 and the connection flow path 115, the flow rate of the recirculated hot water can be increased as compared with the hot water recirculation valve according to the related art, and the warm-up time of the hot water can be shortened.
Referring to fig. 3, when hot water or direct water is used, particularly when the direct water is used during recirculation of the hot water, the pressure P1 of the direct water acting on the rear end surface of the pressure receiving plate 140 is formed to be greater than the pressure P2 inside the connection flow path 115, so that the pressure receiving plate 140 and the valve body 120 are pushed in the flow direction of the direct water, and the valve body 120 is in close contact with the valve seat 117, thereby closing the recirculation flow path 113.
As described above, the recirculation flow path 113 is rapidly closed when the straight feed water is used by the differential pressure (P1-P2) acting on the pressures in front and rear of the pressure receiving plate 140 as a reference, and thus, the problem that the hot water is mixed with the straight feed water and supplied when the user wants to use the straight feed water can be prevented.
Further, the prior art has the following problems: when the temperature of the hot water recirculation valve is different from the temperature of the recirculation pump, the recirculation pump is also operated, and it is difficult to accurately match the set warm-up temperature and power consumption is caused. However, according to the present invention, the recirculation flow path 113 is opened only in the case where the recirculation pump 30 is operated to achieve recirculation of the hot water, and in the case where the operation of the recirculation pump 30 is interrupted, the recirculation flow path 113 is rapidly closed and the recirculation of the hot water is interrupted, whereby the water can be preheated to match the set preheating temperature, and the problem of unnecessary consumption of electric power can be solved.
Fig. 4 is an operational state diagram illustrating a case where a hot water recirculation valve using a straight water supply pipe according to a second embodiment of the present invention is opened, and fig. 5 is an operational state diagram illustrating a case where the hot water recirculation valve using a straight water supply pipe according to the second embodiment of the present invention is closed.
The hot water recirculation valve 100 using a straight water supply pipe according to the second embodiment of the present invention partially changes the structure of the above-described embodiment in which a flow space G3 capable of flowing straight water or hot water in the front-rear direction of the pressure receiving plate 140 is formed in the pressure receiving plate 140, a Diaphragm (Diaphragm)180 is connected between the outer end of the pressure receiving plate 140 and the inner surface of the housing 110, and other structures and operations can be operated in the same manner as the first embodiment.
The diaphragm 180 is fixed at both ends thereof to the outer end of the pressure receiving plate 140 and the inner surface of the housing 110, and is elastically deformable by a differential pressure between the front and rear sides of the pressure receiving plate 140.
According to the configuration of the present embodiment, the pressure receiving plate 140 is connected by the diaphragm 180, so that the pressure receiving plate 140 can be supported in a stable manner, and the cross-sectional area of the connection flow path 115 can be ensured to be further increased as compared with the above-described embodiment, so that the flow rate of the hot water to be recirculated can be further increased, and the warm-up time of the hot water can be further shortened.
The present invention can be applied not only to a hot water recirculation system using a direct water supply pipe but also to a hot water recirculation system for construction provided between a hot water supply pipe and a direct water supply pipe already provided in an existing house.
As described above, the present invention is not limited to the above-described embodiments, and a person having basic knowledge in the technical field to which the present invention belongs can realize obviously modified embodiments, which fall within the scope of the present invention, without departing from the technical idea of the present invention claimed in the claims.
Claims (9)
1. A hot water recirculation valve using a straight water supply pipe is a hot water recirculation valve provided between a hot water supply pipe (13) and a straight water supply pipe (14) installed in an existing house for recirculation of hot water,
comprises a shell (110), a valve body (120) and a pressure receiving plate (140),
the housing (110) includes: hot water flow paths (111, 112) connected to the hot water supply pipe (13); a direct water supply flow path (114, 115, 116) connected to the direct water supply pipe (14); and a recirculation flow path (113) connected between the hot water flow paths (111, 112) and the straight water supply flow paths (114, 115, 116),
the valve body (120) and the pressure receiving plate (140) are provided to the straight water flow path (114, 115, 116),
the valve body (120) and the pressure receiving plate (140) are connected by a shaft (130) having a diameter smaller than the diameters of the valve body (120) and the pressure receiving plate (140), and a connection flow path (115) is formed in a space between the valve body (120) and the pressure receiving plate (140) outside the shaft (130),
a valve body (120) that reciprocates integrally with the pressure receiving plate (140) to open and close one end of the recirculation flow path (113),
when the hot water is recirculated, the valve body (120) is pushed open by the hot water by the pressure of the recirculated hot water, thereby opening the recirculation flow path (113), and when the straight water is used, the pressure receiving plate 140 is pressurized by the pressure of the straight water, thereby closing the recirculation flow path (113).
2. The hot water recirculation valve using a straight water supply line of claim 1, further comprising:
and an elastic member (170) that elastically supports the pressure receiving plate (140) such that the valve body (120) is in close contact with one end of the recirculation flow path (113).
3. The hot water recirculation valve using a straight water supply pipe according to claim 2,
separate spaces (G1, G2) are provided between the outer surfaces of the valve body (120) and the pressure receiving plate (140) and the inner surface of the housing (110) that forms the straight water flow path (114, 115, 116), so that fluid can flow.
4. The hot water recirculation valve using a straight water supply pipe according to claim 2,
a flow space (G3) is formed in the pressure receiving plate (140) so that the straight supply water or the hot water can flow in the front-rear direction of the pressure receiving plate (140),
a diaphragm (180) is connected between the outer end of the pressure receiving plate (140) and the inner side of the housing (110).
5. The hot water recirculation valve using a straight water supply pipe according to claim 1,
when the hot water is recirculated, a pressure (P3) inside the recirculation flow path (113) is formed to be greater than a pressure (P2) inside the connection flow path (115), so that the recirculation flow path (113) is opened.
6. The hot water recirculation valve using a straight water supply pipe according to claim 1,
when hot water or direct water is used, the pressure (P1) of the direct water acting on the rear end surface of the pressure receiving plate (140) is formed to be greater than the pressure (P2) inside the connection flow path (115), and the recirculation flow path (113) is closed.
7. The hot water recirculation valve using a straight water supply pipe according to claim 2,
one end of the elastic member (170) is supported by a movable body (150) formed by extending rearward from the pressure receiving plate (140),
the other side end of the elastic member (170) is supported by a fixed body (160) which is separated from the movable body (150) and coupled to the inside of the housing (110).
8. The hot water recirculation valve using a straight water supply pipe according to claim 7,
the pressure receiving plate (140) is formed in a flange shape protruding outward of the moving body (150).
9. The hot water recirculation valve using a straight water supply pipe according to claim 7,
an opening (118) is formed in one side of the housing (110) so that the valve body (120), the shaft (130), the pressure receiving plate (140), the moving body (150), the fixing body (160), and the elastic member (170) can be inserted into the housing (110).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020160097201A KR101950937B1 (en) | 2016-07-29 | 2016-07-29 | Hot water recirculation valve using direct water supply pipe |
| KR10-2016-0097201 | 2016-07-29 | ||
| PCT/KR2017/008009 WO2018021804A1 (en) | 2016-07-29 | 2017-07-25 | Warm water recirculating valve using direct water supply tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109563936A CN109563936A (en) | 2019-04-02 |
| CN109563936B true CN109563936B (en) | 2021-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780045335.7A Active CN109563936B (en) | 2016-07-29 | 2017-07-25 | Hot water recirculation valve using a straight water supply pipe |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US10823298B2 (en) |
| KR (1) | KR101950937B1 (en) |
| CN (1) | CN109563936B (en) |
| WO (1) | WO2018021804A1 (en) |
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| US9260843B2 (en) | 2012-06-22 | 2016-02-16 | Kohler Mira Limited | Valve disinfecting method |
| GB2577204B (en) * | 2017-05-03 | 2021-12-01 | Ge Oil & Gas Pressure Control Lp | Reflexive valve preservation and actuation system and method |
| GB2568271B (en) | 2017-11-09 | 2020-04-22 | Kohler Mira Ltd | A plumbing component for controlling the mixture of two supplies of water |
| KR102607375B1 (en) * | 2018-10-25 | 2023-11-29 | 주식회사 경동나비엔 | Recirculation valve and hot water recirculation system using the same |
| CA3115859C (en) * | 2018-10-25 | 2023-05-23 | Kyungdong Navien Co., Ltd. | Recirculation valve and hot water recirculation system using the same |
| CN113137498B (en) * | 2020-01-19 | 2022-10-14 | 芜湖美的厨卫电器制造有限公司 | Water return valve and water supply system |
| CN111473132B (en) * | 2020-03-09 | 2021-10-01 | 宁波方太厨具有限公司 | Water mixing prevention valve and water heater water supply system using same |
| CN112324958B (en) * | 2020-08-13 | 2021-10-12 | 宁波方太厨具有限公司 | Water way structure and gas water heater water supply system applying same |
| CN114033867B (en) * | 2021-11-08 | 2024-03-15 | 浙江管一管管业有限公司 | Circulation goes out liquid system and circulation switching valve with switching function |
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| US9027844B2 (en) * | 2010-03-05 | 2015-05-12 | Xylem Ip Holdings Llc | Water delivery system and valve for a sink |
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- 2016-07-29 KR KR1020160097201A patent/KR101950937B1/en active IP Right Grant
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2017
- 2017-07-25 US US16/320,033 patent/US10823298B2/en active Active
- 2017-07-25 WO PCT/KR2017/008009 patent/WO2018021804A1/en active Application Filing
- 2017-07-25 CN CN201780045335.7A patent/CN109563936B/en active Active
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| US9027844B2 (en) * | 2010-03-05 | 2015-05-12 | Xylem Ip Holdings Llc | Water delivery system and valve for a sink |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018021804A1 (en) | 2018-02-01 |
| CN109563936A (en) | 2019-04-02 |
| US20190249785A1 (en) | 2019-08-15 |
| KR101950937B1 (en) | 2019-02-22 |
| KR20180013447A (en) | 2018-02-07 |
| US10823298B2 (en) | 2020-11-03 |
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